The partial differentiations and derivatives are introduced for multivariate finite discrete functions, and the properties of which are discussed.

对多元有限离散函数引入了偏导数及微分新概念，并讨论了其性质。

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By using nonstandard analysis, we define new generalized functions as discrete functions, and their derivatives are defined as difference quotients.

在非标准分析框架下，用离散函数定义新广义函数，用差商定义其导数。

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In the past decade especially, advanced technologies for capturing a snapshot of the brain in action have confirmed that discrete functions occur in specific locations.

特别是过去的十几年间，用先进的科技拍摄的大脑活动的快照已经证明了单个的功能发生在特定的区域。

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So that's a shot fired across the bow against the author because it's Barthes' supposition that the author isn't maybe even quite an author function because that function may be hard to identify in a discrete way among myriad other functions.

因而这是对作者的警告,因为巴特推测,作者可能甚至都不是功能性的,因为这种功能可能很难通过分离的方式,在很多其他功能中被辨认出来。

耶鲁公开课 - 文学理论导论课程节选

Surveys show over and over there's simply no interest in email, web browsing, instant messaging or other online activities as discrete functions on the TV.

ENGADGET: Entelligence: The evolution of the TV